Mustakshif Shariah Board Rulings on E424 (Curdlan )

According to Mustakshif Shariah Board, E424 (Curdlan ) is classified as Mushbooh (not Halal) unless verified. While the fermentation process itself is usually halal-friendly, the source of the glucose used in fermentation raises concern. If the glucose comes from plant-based sources like corn or sugar beet, it is likely halal. However, if derived from questionable or non-halal sources (e.g., certain enzyme-treated sugars or additives in fermentation), it could compromise the halal status. Also, the use of non-halal processing aids or cross-contamination during manufacturing can affect its permissibility. Without clear information from the manufacturer, its status remains uncertain for many scholars.

Fatwas Concerning the Ingredient

Islamic scholars suggest confirming the source of microbial fermentation. Many halal authorities approve E424 only if produced with halal-compliant substrates and processing methods.

About E424

The food additive E424 is known as Curdlan. It is a high-molecular-weight polysaccharide made of glucose units. Other names include Curdlans & Curdlan gum. Curdlan is tasteless, odorless, and used mainly for its thickening and gelling properties in food products.

How is it extracted?

Curdlan is a microbial gum, meaning it is produced by fermentation. The most common source is the Agrobacterium, which converts glucose into curdlan under controlled conditions. The glucose used in the fermentation process can be derived from corn, wheat, or sugar beet. After fermentation, curdlan is extracted, purified, and dried into powder form.

Uses of the Ingredient

Curdlan (E424) acts as a gelling agent, thickener, and stabiliser. It is commonly used in noodles, meat products, and frozen foods to improve texture and water retention. Its ability to form a heat-stable gel makes it useful in food processing.

Conclusion

Curdlan (e424) is widely used in the food industry for its gelling and stabilising properties. While it is typically produced through microbial fermentation, the halal status of curdlan is not always clear-cut. The main concern lies in the source of glucose used during fermentation, which may come from either halal or questionable origins. Due to this uncertainty, many scholars classify e424 as mushbooh, doubtful, unless the full production process is verified to be halal-compliant. To avoid potential issues, muslim consumers are encouraged to look for products with reputable halal certification or to contact the manufacturer for clarification.